{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T01:06:33Z","timestamp":1781658393188,"version":"3.54.5"},"reference-count":23,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2023,5,22]],"date-time":"2023-05-22T00:00:00Z","timestamp":1684713600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,5,22]],"date-time":"2023-05-22T00:00:00Z","timestamp":1684713600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"natural science foundation of Shanghai, China","award":["19ZR1441500"],"award-info":[{"award-number":["19ZR1441500"]}]},{"name":"natural science foundation of Shanghai, China","award":["22ZR1458200"],"award-info":[{"award-number":["22ZR1458200"]}]},{"name":"key program of science and technology commission foundation of Changning district, Shanghai, China","award":["CNKW2020Z04"],"award-info":[{"award-number":["CNKW2020Z04"]}]},{"name":"key program of science and technology commission foundation of Changning district, Shanghai, China","award":["CNKW2020Z04"],"award-info":[{"award-number":["CNKW2020Z04"]}]},{"name":"key program of science and technology commission foundation of Changning district, Shanghai, China","award":["CNKW2020Z04"],"award-info":[{"award-number":["CNKW2020Z04"]}]},{"name":"key program of science and technology commission foundation of Changning district, Shanghai, China","award":["CNKW2020Z04"],"award-info":[{"award-number":["CNKW2020Z04"]}]},{"name":"medical PhD innovative talent base project of Changning district, Shanghai, China","award":["RCJD2021B09"],"award-info":[{"award-number":["RCJD2021B09"]}]},{"name":"medical PhD innovative talent base project of Changning district, Shanghai, China","award":["RCJD2021B09"],"award-info":[{"award-number":["RCJD2021B09"]}]},{"name":"medical PhD innovative talent base project of Changning district, Shanghai, China","award":["RCJD2021B09"],"award-info":[{"award-number":["RCJD2021B09"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Med Imaging"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>The usefulness of transvaginal two-dimensional shear wave elastography (2D SWE) for cervical lesions is still uncertain. This study was to explore the value of transvaginal 2D SWE in the evaluation of the stiffness of normal cervix and its change with different factors under strict quality control (QC).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Two hundred patients with normal cervix were included in this study and were examined using quantitative 2D SWE to evaluate cervical stiffness and its change with different factors under strict QC.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Intra-observer concordance of transvaginal 2D SWE parameters in midsagittal planes were acceptable with intraclass correlation coefficients higher than 0.5. Transvaginal 2D SWE parameters were significantly higher than the corresponding transabdominal parameters. 2D SWE parameters of internal cervical os were significantly higher than the corresponding parameters of external cervical os in a transvaginal midsagittal plane. 2D SWE parameters of external cervical os increased significantly over 50 years old, while these parameters of internal cervical os didn\u2019t change significantly with increasing age. 2D SWE parameters of internal cervical os of horizontal position cervix were significantly higher than those of vertical position cervix. SWE parameters of normal cervix did not change according to different menstrual cycles, parities and human papilloma virus test results.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Transvaginal 2D SWE under strict QC could provide quantitative, repeatable and reliable cervical stiffness information. Internal cervical os was stiffer than external cervical os. Menstrual cycles, parities and human papilloma virus test results wouldn\u2019t affect cervical stiffness. However, age and cervical positions should be taken into condition while interpreting 2D SWE results of cervical stiffness.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12880-023-01020-7","type":"journal-article","created":{"date-parts":[[2023,5,22]],"date-time":"2023-05-22T14:02:40Z","timestamp":1684764160000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Evaluation of the stiffness of normal cervix and its change with different factors using transvaginal two-dimensional shear wave elastography under strict quality control"],"prefix":"10.1186","volume":"23","author":[{"given":"Hui-Ping","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing-Jing","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wen-Ying","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiu-Zhi","family":"Tao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Bin","family":"Ma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu-Qing","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,5,22]]},"reference":[{"key":"1020_CR1","doi-asserted-by":"publisher","first-page":"74","DOI":"10.11152\/mu-2646","volume":"23","author":"M Dudea-Simon","year":"2021","unstructured":"Dudea-Simon M, Dudea SM, Ciortea R, Malutan A, Mihu D. 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